Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua duy den snippets" » "la duy den snippets", "luan quy den snippets", "luan day den snippets", "lua day den snippets", "lua duy de snippets", "lua duy dung snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("lua duy den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lua duy den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua duy den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua duy den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.